please handle together with sr#620445, sr#620444

- Trying to fix build on older distros that fail because of a missing or
broken autoconf valgrind detection macro. Removing autoreconf to hopefully
fix this.

- add fix_dlopen.patch: fixes an issue with dlopen()'ing the tcti-device
library from tpm2-0-tss. See
https://github.com/tpm2-software/tpm2-abrmd/issues/486.

- update to major version 2.0.0:
- support_dbus_activation.diff: removed, is not contained upstream
- the tpm2 stack introduces an incompatible ABI to the previous version with
this update. There is no compatibility layer, libraries have new names
etc.
- upstream changelog:
## 2.0.0 - 2018-06-22
### Added
- Integration test script and build support to execute integration tests
against a physical TPM2 device on the build platform.
- Implementation of dynamic TCTI initialization mechanism.
- configure option `--enable-integration` to enable integration tests.
The simulator executable must be on PATH.
- Support for version 2.0 of tpm2-tss libraries.
### Changed
- 'max-transient-objects' command line option renamted to 'max-transients'.
- Added -Wextra for more strict checks at compile time.
- Install location of headers to $(includedir)/tss2.
### Fixed
- Added missing checks for NULL parameters identified by the check-build.
- Bug in session continuation logic.
- Off by one error in HandleMap.